Scientists are grappling with a cosmic mystery: why does the Universe behave differently on massive scales compared to our ...

Scientists suggest that a fifth, hidden force linked to dark energy may exist in the solar system but has not yet been ...

For decades, the four known forces of nature, gravity, electromagnetism, and the strong and weak nuclear forces, have ...

Gravity, electromagnetism, the strong nuclear force, the weak nuclear force. For decades, physicists have recognized exactly ...